short coat
襡 centers on a short coat, a specific type of garment. The meaning is narrow and concrete, without broader abstract extensions.
襡 combines the clothing radical 衤 with 蜀, which likely provides the sound. The exact historical development is uncertain, but the structure suggests a phono-semantic compound for a garment.
The left side 衤 is clothing, and the right side 蜀 looks like a wrapped package. Imagine a short coat folded and wrapped up like a parcel.
For ショク, picture a short coat being shocked by static electricity: shock -> ショク, and the coat clings to you.